In this paper, the nano Silver dioxides films have been deposited using the reactive pulsed laser deposition method (RPLD) using the tattoo removal Q-swithing Nd-Yag laser, at the value of the wavelength of 1064nm, pulseduration of 6 sec, and 800 mJ energy of laser have been applied for ablated an extra purity of the Silver target then deposited the nano siver oxide particles on the silicon substrates, synthesize and studying of the rapid thermal annealing (RTA) effects on the structural properties, the morphological properties, the Optical properties, the electrical properties and finally the solar cell properties for the prepared samples. Both X-ray diffraction and electron microscopy studies show that the structure of the film depends on the annealing teamperatures effects of the deposited film. The nano silver oxide is present in different crystalline stages, where the particle sizes have been increases with increasing heat treatment from 45nm to 75 nm. The analized Results of the optical aprove the improvements of the absorption lead to decreasing the reflection values compared with the surface of the silicon (crystalline Si), where the transparency for the range of larger than 300 nm and the values of the optical band gap of 2.12 eV. The synthesized results for the solar cell fabrications present a clear improvement in the solar cell quantum efficiency values in the case of silver nano oxide deposition and annealed with the high degree, where the value of the efficiency about of 4.22.

The track registration technique with a CR-39 detector was used to measure radon concentrations, and uranium contents in ground water samples from the Nineveh plain region wells. Samples were selected from 20 locations for measurements. This research aimed to assess radiological risks from uranium ingestion, and measure annual effective dose AED resulting from the intake of radon in the ingested water. Radon concentrations in these water samples were found to vary from 0.362 to 1.485 BqL−1, which were below the safety recommended limits 4 to 40 BqL−1 based on the Scientific Committee of United Nations on Atomic Radiation Effects. AED was found to vary from 1.32 to 5.42 µSv/y. Uranium activity concentrations ranged from 0.356 to 1.488 BqL−1, and the corresponding uranium concentrations in water samples were found to vary from 28.76 to 120 μgL−1. Uranium concentrations were over the safety recommended limits when, compared with recommended limits of of 30 μgL−1 for drinking water based on the US environmental protection agency. The excess cancer risk varied from 0.398 to 1.666 x10-4 with a mean value of 0.9 x10-4, indicating that 9/100,000 people in these areas haves a cancer risk from the water.

Uranium is a common radioactive element in Earth’s crust (soil, rock), so it is important there quantity to be under control. The concentration of uranium in soil varies widely, Depending on the geological location, its concentration in the surface soil vary from 0.1 mg.Kg-1 (ppm) to 20 mg.Kg-1 (ppm) with a world average of 2.8 ppm and the allowed limit that equals 11.7 ppm. The uranium concentration, radon activity, radon concentration, in twenty soil samples collected from AL-Hamdaniya region (East of Mosul city) were measured using the sealed-can technique based on the CR-39 SSNTDs. The estimated values for the uranium activity which equal to radon activity at secular equilibrium were found vary between (581.11-1453.5) mBq with mean value 905.89 mBq, the uranium concentration are between (0.313-0.784) ppm with mean value of 0.488 ppm. All values of the samples under the test are below of allowed limit and world average value.

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Cosmetics play an important role of human external appearance, its products used to alter or enhance the facial appearance or the body and skincare, currently worldwide consumed with frequently use increasing the human body exposure to the various chemical elements including radioactive substances. This research aimed to measure the concentrations of alpha emitters, and the annual effective dose AED resulting from radon intake. LR-115 track detector used to measure radon, and radium concentrations in 20 cosmetics samples selected from markets. In this work the concentrations of radon in the samples found to vary from 9.876 to 30.97 Bq/m 3 with 22.11 Bq/m 3 a mean value, this mean value is a very small than 100 Bq/m 3 the reference level limits of the World Health Organization (WHO). The annual radon effective dose varied between 0.249-0.781 mSv/y which is within the range of 0.2-10 mSv/y (UNSCEAR). Radium contents vary between 0.041-0.249 Bq/Kg with 0.115 Bq/Kg as a mean value. This work identified law measured concentrations of radionuclide present in cosmetics showed its safe for use.